
The Gut – The Second Brain of the Human
Highlights:
- What is the connection between the balance of the gut microbiome and mental health?
- How do synbiotics support cognitive functions?
- A diet rich in synbiotics
- The future of probiotics
Perhaps you have heard the phrase “you have butterflies in your stomach” when you are nervous, excited, or even in love. Or maybe you have felt how anxiety literally settles in your belly as a knot.
These expressions are far from just metaphors. There is a deep and astonishing connection between gut health and the mental state of a person. The gastrointestinal system plays a crucial role in regulating mood, behavior, and even cognitive functions.
When the Microbiome Suffers, the Mind Suffers Too
The human gut contains trillions of microorganisms—bacteria, viruses, fungi—collectively known as the gut microbiome. This living world is like an ecosystem that constantly interacts with our bodies. The microbiome not only digests food and synthesizes vitamins; it also actively participates in the production of neurotransmitters like serotonin, dopamine, and GABA—all of which are crucial for mental health.
Up to 90% of the serotonin in the human body is produced in the gut, not in the brain. This neurotransmitter is often called the “happiness hormone.” Furthermore, the gut flora communicates with the brain through the so-called gut-brain axis, utilizing nerve pathways (primarily the vagus nerve), hormones, and immune signals.
An imbalance in the gut microbiome—a condition called dysbiosis—can lead to various health problems, including depression, anxiety, chronic fatigue, and even cognitive decline. This can happen due to:
- Overuse of antibiotics
- Poor diet (high in sugars and low in fiber)
- Chronic stress
- Lack of sleep
Studies show that people with depression often have lower diversity of gut bacteria like Coprococcus and Faecalibacterium, which are involved in the production of dopamine and other neurotransmitters.

Synbiotic – Food for the Mind
Synbiotics combine two key elements:
- Probiotics – live bacteria that inhabit the gut and restore microbial balance.
- Prebiotics – indigestible fibers that serve as food for probiotics, enhancing their effectiveness.
Symbiotic can be formulated in two ways: complementary symbiotic, where the probiotic and prebiotic act independently, and synergistic symbiotic, where the prebiotic is selectively used by the probiotic, leading to a stronger effect.
Thus, symbiotic:
- Improve gut motility and bowel regularity
- Reduce bloating, gas, and discomfort
- Restore the microbiome after antibiotic treatment
- Protect the gut lining from pathogenic bacteria
- Enhance the absorption of B vitamins and vitamin K
Research shows that symbiotic can have a positive impact on mental health. The combined intake of probiotics and prebiotics is more effective than taking them separately, as prebiotics support the survival and multiplication of probiotics in the gut. This leads to better neurotransmitter production and a reduction in inflammatory processes associated with mental disorders. For example, certain strains of probiotics like Lactobacillus rhamnoses and Bifidobacterium longum are linked to reducing symptoms of anxiety and depression.
Some neurologists even refer to the gut as the “new frontline” in the fight against mental illnesses such as depression, PTSD, and bipolar disorder. A study in the Journal of Functional Foods showed that participants with moderate depression who took a symbiotic supplement for 8 weeks experienced a significant reduction in anxiety symptoms and an improvement in sleep quality.

Gut-Brain Axis: How the Gut Affects Mental Health
The gut and the brain are connected through the gut-brain axis, a communication network that includes nerve signals, hormones, and immune molecules.
The gut-brain axis represents a bidirectional communication system between the central nervous system and the gut microbiota. This connection is facilitated through nerve pathways, hormones, and immune signals. Gut bacteria can influence the production of neurotransmitters that regulate mood and behavior.
Symbiotic help maintain this axis healthy and active by:
- Supporting the production of serotonin and dopamine
- Suppressing inflammatory processes linked to anxiety and depression
- Reducing cortisol—the stress hormone
- Improving sleep and concentration
- Alleviating symptoms of anxiety and mild depression
B-Protect – A Modern Symbiotic for the Modern Human
B-Protect is a symbiotic product with a formula that combines selected probiotic strains and balanced prebiotics. Thanks to this composition, it maintains gut balance during stress and medication intake, while also improving immune defense and digestive system function. B-Protect can be part of a holistic approach to managing anxiety and fatigue, helping with daily stress, improving cognitive abilities, and enhancing overall emotional well-being.
Its formula is particularly suitable for people with busy lifestyles and is also recommended during antibiotic use or stomach discomfort associated with gut microbiome imbalance.

Foods Rich in Natural Symbiotic: Nature’s Ally for the Gut and Brain
Is it possible that diet also affects mood? The answer is yes, and not just when you treat yourself to something sweet after a stressful day. Proper nutrition is the key to gut health, and as we have learned, to mental resilience as well. Here is how to include a combination of probiotic and prebiotic foods in your diverse diet:
Probiotics – Live Bacteria with Beneficial Properties:
- Yogurt with live cultures – Especially beneficial if it is homemade or organic, rich in Lactobacillus bulgaricus and Streptococcus thermophilus.
- Kefir – Milk-based or water-based, contains dozens of strains of bacteria and yeast, excellent for microbiome diversity.
- Kimchi – Fermented Korean salad with a spicy flavor, offering Lactobacillus plantarum and a rich amount of antioxidants.
- Sauerkraut – Rich in enzymes and lactobacilli.
- Tempeh and Natto – Japanese fermented soy products, an excellent source of probiotics and vitamin K2, important for bone and heart health.
Prebiotics – “Food” for Good Bacteria:
- Garlic and onion – Contain inulin and fructooligosaccharides, which feed the beneficial flora.
- Leeks and asparagus – Rich in fibers that stimulate the growth of Bifidobacteria.
- Bananas (especially green) – A source of resistant starch that reaches the colon intact and nourishes the bacteria.
- Chicory – Its root contains the highest amount of inulin among all plants.
- Oats – Contain beta-glucans and resistant starch, beneficial for both the microbiome and cholesterol levels.
- Whole grains – Not only rich in fiber but also maintain a feeling of fullness and provide long-lasting energy.

Foods Rich in Natural Symbiotic: Nature’s Ally for the Gut and Brain- Personalized Probiotics – The Future is Here
The science of microbiomes is advancing at lightning speed. More and more researchers are interested in so-called “personalized probiotics,” where probiotics are selected according to the individual’s microbiome.
Psych biotic therapies are also being developed, combining probiotics with existing antidepressants to increase their effectiveness and reduce side effects. New biotechnologies are even creating synthetic probiotics programmed to produce specific neurotransmitters directly in the gut.
In the future, it is entirely possible that one’s personal microbiome will be a key factor in the diagnosis and treatment of mental illnesses.
Intelligent Gut Care is Mind Care
Symbiotic are not just another trend in healthy eating. They are a real tool for maintaining inner balance, which directly reflects on our mood, concentration, and ability to cope with stress. In a world where mental health is increasingly important, symbiotic are the bridge between the gut and the mind that deserves to be maintained.

Sources:
https://www.healthline.com/health/gut-brain-connection
https://www.ncbi.nlm.nih.gov/pmc
https://www.sciencedirect.com/science/article/pii/S1756464622004674
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